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电沉积制备铁-镍因瓦合金的工艺研究:前言

放大字体  缩小字体发布日期:2012-04-14  浏览次数:1089

摘要:采用硫酸盐镀液体系,在紫铜箔上电沉积制备了Fe-Ni合金镀层,研究了镀液成分(如镀液中添加剂含量、Ni2+/Fe2+浓度比)及主要的沉积工艺参数(包括阴极电流密度、温度和搅拌速率)对镀层表面质量、成分及组织的影响。镀液成分及最佳工艺参数为:0.3 mol/L NiS04·6H20,O.08 mol/L FeS04·7H20,2 g/L糖精,O.35 g/L 1,4-丁炔二醇,电流密度3.7 A/dm2,施镀温度40 ℃,搅拌速率200 r/min。

关键词:因瓦合金;铁镍合金镀层;硫酸盐;电沉积;工艺参数

中图分类号:TQl53.2    文献标志码:A

文章编号:1004—227X(2009)05—0009—04

Study on iron-nickel invar alloy prepared by electrodeposition//LIU Yi—chun,LIU Lei*,SHEN Bin,LI Jia—ke.HU Wen—bin

AbstractA Fe—Ni alloy coating was prepared on red copper foil by electrodeDosition from a sulfate electrolyte.The effects of bath composition(such as the contents of additives and the concentration ratio of(Ni2+ to Fe2+ )and process parameters(including cathodic current density,temperature and stirring rate)on the surface quality,composition and structure of deposit were studied.The bath composition and optimal process parameters were obtained as follows:0.3 mol/L NiS04·6H20,0.08 mol/L FeS04·7H20,2 g/L saccharin,0.35 g/L l,4-butynediol,current density 3.7 A/dm2。temperature 40℃,and stirring rate 200 r/min.

Keywordsinvar alloy;iron-nickel alloy coating;sulfate;electrodeposition;process parameter

First-author’S addressState Key Laboratory of Metal Matrix Composites,Shanghai Jiaotong University,Shanghai 200240,China

 

前言

 

    1896年法国人C.E.Guillaume在研究铁镍合金的过程中发现镍质量分数为36%的镍铁合金在很宽的温度范围内具有极低的热膨胀系数,将其命名为因瓦合金(invar源自invariable一词,意指“不变的”)。从此,因瓦合金被广泛用于精密仪器、电子元器件、航空航天以及半导体封装等领域[1-3]

 

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